Nonlinear refraction and multiphoton absorption in polydiacetylenes from 1200 to 2200 nm

Polyakov, Sergey V.; Yoshino, Fumiyo; Liu, Mingguo; Stegeman, George I.

doi:10.1103/physrevb.69.115421

Cited by 57 publications

(51 citation statements)

References 44 publications

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“…The 2PA spectra of this family of compounds cover the entire visible region [13], with peaks from 600 nm to 770 nm, depending on the compound. A similar enhancement behavior on the multi-photon absorption spectrum was also observed for polydiacetylenes [24] and MEH-PPV [25]. It is worth mentioning that the 2PA spectrum of the compounds studied here, at the near infrared (~850 nm), were determined to be approximately 40 GM.…”

Section: Resultssupporting

confidence: 82%

Broadband three-photon absorption spectra of platinum acetylide complexes

Vivas

Piovesan

Silva

et al. 2011

Opt. Mater. Express

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Abstract:We investigate the three-photon absorption spectra of four platinum acetylides complexes employing femtosecond pulses. We observed strong three-photon absorption cross-section in the near-infrared region (from 850 nm to 1200 nm). The three-photon absorption (3PA) spectra present resonance enhancement effect as two photons of the excitation wavelength approach the lower two-photon allowed states of the molecules as well as a 3PA allowed band around 1180 nm. The 3PA crosssection spectra were interpreted using the sum-over-essential-states approach, considering a three-energy-level diagram.

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Section: Resultssupporting

confidence: 82%

Broadband three-photon absorption spectra of platinum acetylide complexes

Vivas

Piovesan

Silva

et al. 2011

Opt. Mater. Express

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“…In fact, the nonlinearity predicted for the polydiacetylene PTS based on the measured and calculated transition dipole moments ( is shown in Fig 1(c). Experiments at CREOL single crystal PTS agree with the above positive on the low frequency side has been observed, as well as the decay in the magnitude of n 2 for long wavelengths [16,19]. Similar behavior has been reported in conjugated phenylenevinylenes another symmetric linear polymer with π-electron delocalization.…”

supporting

confidence: 74%

“…Here we consider two specific cases, the single crystal polydiacetylene PTS and the linear squairaine molecules. This work was stimulated by independent measurements in PTS from two groups which are at variance with one another, albeit for crystals prepared in very different ways [14][15][16]. In the squaraines, measurements by different groups are consistent with one another [4,11,12 ].…”

mentioning

confidence: 99%

Refractive Nonlinearity of Linear Symmetric Molecules and Polymers Revisited

Stegeman

2009

Photon. Lett. Poland

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“…Organic materials with large third-order optical susceptibilities, c (3) , 1 can be exploited for a wide variety of applications including all-optical switching (AOS) [2][3][4][5] and correlation for laser diagnostics and image recognition. [6][7][8] We have previously reported a range of hydroxy-functionalised chromophores, including I ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of a dipolar chromophore with third-harmonic generation applications in the near-IR

et al. 2012

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E-2-Tricyanovinyl-3-n-hexyl-5-[4-{bis(4-n-butylphenyl)amino}-2-methoxystyryl]-thiophene, 1, has previously been used to demonstrate applications relying on frequency tripling of 1.55 mm light. Here we report the synthesis and chemical characterisation of 1, along with quantum-chemical calculations and additional experimental investigations of its third-order nonlinear properties that give more insight into its frequency tripling properties. Although 1 can be processed into amorphous films, crystals can also be grown by slow evaporation of solutions; the crystal structure determined by X-ray diffraction shows evidence of significant contributions from zwitterionic resonance forms to the ground-state structure, and reveals centrosymmetric packing exhibiting p-p and C-H/N^C interactions. Both solutions and films of 1 exhibit near-infrared two-photon absorption into the low-lying one-photon-allowed state with a peak two-photon cross-section of ca. 290 GM (measured using the white-light continuum method with a pump wavelength of 1800 nm) at a transition energy equivalent to degenerate two-photon absorption at ca. 1360 nm; two related chromophores are also found to show comparable near-IR two-photon crosssections. Closed-aperture Z-scan measurements and quantum-chemical calculations indicate that the nonlinear refractive index and third-harmonic generation properties of 1 are strongly dependent on frequency in the telecommunications range, due the aforementioned two-photon resonance.

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Nonlinear refraction and multiphoton absorption in polydiacetylenes from 1200 to 2200 nm

Cited by 57 publications

References 44 publications

Broadband three-photon absorption spectra of platinum acetylide complexes

Broadband three-photon absorption spectra of platinum acetylide complexes

Refractive Nonlinearity of Linear Symmetric Molecules and Polymers Revisited

Characterisation of a dipolar chromophore with third-harmonic generation applications in the near-IR

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